Saw set



Sept. 6, 1932. c, JQHNSQN 1,875,736

SAW SET Filed Nov. 30.1927

Patented Sept. 6, 1932 UNITED T TE CHARLES a aonnson, ornmonvILLE,conuno'rronr SAW SET Appliation filed November 0,1927. Serial No.236,540." I

My invention relates to the class of devices known particularly by thename herein given, and an object of my invention, among others, is theproduction of a tool of this class that- Figure 1 is an edge view of myimproved setting tool.

. Figure 2 is a side view of the same, showing the jaws closedtoapproximately tooth setting position. I

Figure 3 is a view in section on a plane denoted by the dotted line 38of Figure 2.

Figure 4 is a detail view, scale enlarged, in 1 lengthwise centralsection through the setting aws. a 1

Figure 5 is an isometric view, of the inner end of the pivoted handlemember.

Figure 6 is a view similar to Figure 2. but

showing the parts in their normal positions,

' the outer ends of thchandles being broken off. t

Figure 7 is a view similar to Figure 6, but showing the construction forpreventing movement of the pivoted lever to an inoperative position. a

In the accompanying drawing the numeral 10 indicates the body of myimproved tool that is preferably constructed ofcomparatively thin metalbent into trough sha e with extensions 11 at the edges near the endthereof and with'a stationary handle 12 projecting at an angle from saidbody part. and as clearly shown in Figure 2 of the drawing.

A supporting block 13, is secured between the extensions 11. and ananvil 14 is pivotallv supported at the end of said block, said anvilcomprising one. of the iaws of the tool to be more particularlyhereinafter described.

A pivoted handle 15 of substantially U- shape in cross section andformedfrom thin metalsimilarly tothe handle 12, has ears'16" located onopposite sidesof the end ofthef block 13" and through which ears andblock a plvot 17 for said handle extends. vA substan'- tiallytriangularly shaped rocker 18 having an outwardly curved cam surface ispivotally mounted between the side parts of the handle" 15, this rockerbeing curved as to its outer end for action against an operating jaw 19at one end of a movable aw supporting member 20 having a setting jaw 21at its extreme outer end located opposite and ,to'act in'cooperatlonwith the anvil 14-. The jaw 19preferably has an outwardly curvedcam22-against which the rocker 18 acts, and aspring 23 secured withinthe handle 12 presses against the jaw 19to force the setting jaw 21 onthe member 20 away fromthe anvil 14. It will be noted that the pivot 17passes through the axis of the anvil 14 and is at right anglcs theretolThe end ofthe block 13 is formed on the arc of a circle struck fromtheaxis of the pivot 17 and a roller 24 is supported between the sides ofthe handle 15 with its periphery in contact. with the curved end of saidblock,

the periphery of saidroller also beingin contact with the curved end ofthe rocker or tilt mg fulcrum 18'; andas shown in dotted lines" inFie'ures 2 and 6 of the drawing. A ball 25 seated upon a spring in asocket in the block 13 is forced, by said spring against a. shoulder 26on the handle 15 to force the latter toward the handle 12. The mouth ofthe hole in which the hallis located'is peened'over to make it smallerthan the diameter of the ball to retain thelatter in place. A stop 27 inthe form of a support secu'redto and extending between the sides of thehead 29.

limitsthe pivotalmovement of the fulcrum 18 in one direction and anotherstop 28 formed by indenting the metal of a head 29 comprising the end ofthe handle 15'and in which the end of the block 13, the roller 24 andthe cam block 18 are located, limits the.

pivotal movement of said fulcrum 'in the opposite direction.

It will be noted that this'construction pro- 7 vides means whereby greatforce may beexing the jaws separated, with Fig.2,showing the jaws closedto approximately the tooth setting position, that the' pivot for therocker 18 moves from a position laterally of toward a position with itspivot between the pivot pin'j17and the cam surface 22 of thejaw 19during movement of the handle for caus ing the jaw 21 to approach theanvil 14. In Fig. 2 the jaw. 21 has not been moved sufficiently toentirely close the gap between the same and the anvil 14. The pivot forthe rocker .18 furthermore has not beenmoved entirely into alignmentwith the handle pivot 17 Continued movement of the handle 15 will causeforce to be applied against the cam surface 22 by the rocker18 until themaximum amount of pressureis reached, said maximum pressure occurringwhen the pivot for the rocker 18 is truly aligned with the pivot 17.

The anvll A 14 is of generally I round contour andhas at its peripherysetting points 30, c

which points are beveled to slope downwardly-toward the edge of theanvil, the length of this slope 31 being different for each setting,point so ,th'atdifi'erent lengths may be 7 given to the set or bentportion of different sized teeth occurring in finer or coarser saws, theset of which is eifected by operation of the device. These angles-maybe'indicated by numerals or, other characters placed around' the edge ofthe anvil, as shown in Figures 2 and 7 of the drawing, the anglespreferably increasing gradually insuccession fromone point adj a--side'of the anvil around it-to the cent the point of beginning.

In order to prevent the anvil from rotat-' ing on its pivot 32 aholderin the form of a rib 33 is made at the base of the jaw 21,

and as shown particularly in Figure 4 of the:

drawing, this rib being grooved to .receive the points 30, as showninFigures 3 and 4' of the drawing.

Byswinging the-handle 15 awayfrom the handle 12 to a certain extent, thepoints 30 may .be disengaged from the groove in the holder and the anvilmay then be turned to.

locate the slope 31 desired next to the base of the jaw 21, the parts inthis position being as shown in Figure 6 and the-shoulder 26 restingagainstthe block 13. y .2

Should the jaw 19 be inadvertently pushed into the handlemember 12'toits fullest extent the fulcrum 18 would swing outwardly, as shown inFigure 7, but the stop 27 would prevent its swinging so far that it willnot readily pass back into position when the handle member 15 is movedtoward the mem ber 12. Y

It is believed the operation of the device will be readily understood bythose skilled in the art, it being briefly remarked that the the jaw 21every othertooth in a saw is placed upon this slope, said teethfollowing each closed together and the set desired is thus imparted tosaid teeth. The saw set is then turned and the teeth between those whichhave been set are then operated upon.

, It will be notedtha-t the groove in the rib 33 acts to receive thepointof each saw tooth,; thereby properly positioning such tooth for thesettin o eratlon.

In accordance withthe provisions of the patent statutes I have describedthe principles of operation of my invention, together with the devicewhich I now consider tolrepresent the best embodiment thereof; but Idesire to have it understood that the device shown is only illustrativeand that theinvention'may be carried out by other means and applied touses other than those above set out.

I claim-' V 1. A saw set comprising'a movableand a stationary jaw, thelatter comprising an anvil, two handle members, one of which ispivotally mounted on a pivot passing through the axis of said anvil, andconnections between said pivoted handle member and the movable jaw forforcing said jaws one toward the other,

said connections including a fulcrum pivoted on the. pivoted handlebetween stops carried by said handle.

2. A saw set comprisng a movable and a stationary jaw member, two handlemembers, one of which is pivotally mounted, a fulcrum pivotally mountedon the pivoted handle proper slope 31 being located at the base of otherin succession, and the handles 1215 are member and having. oppositelydisposed curved edges, a roller in contact with one of sald curvededges, and an operatlng member on the movable jaw in contact with theouter curved edge. y

3. A saw setcomprising abody, a jaw member slidably mounted in the bodyand having asetting and an operating jaw, a stationary jaw member, asupport having a rounded end, a handle pivoted to said support, a rolleron said handle in contactv with said support. a fulcrum pivotallymounted on said handle 'andivhaving a rounded edge engagedwith saidroller and a roundededge opposite said roller engaged with said.operating aw, and a handle rigidly secured to said body. 7

4. A saw set comprising a stationary and a movable handle member, ananvil pivotally mounted on one of said handle members, said anvil havingsetting faces arranged at different angles so that anyone of said anglesmay be employed, a movable aw member carried by one of said handlemembers, and means associated with said movable jay member and thesetting faces of the anvil for retaining the anvil in position topresent a selected setting face to the movable jaw member.

5. A saw set comprising a stationary handle and a movable handle, amovable jaw member carried by the stationary handle, means for operatingthe movable j aw through the medium of the movable handle, an anvilpivotally mounted on the stationary handle and having setting facesarranged at different angles, each setting face having a setting pointassociated therewith, and means carried by the movable jaw member forengaging any one of said setting points to retain the anvil with aselected setting face operatively presented to the movable jaw member.

6. A saw set comprising a stationary handle and a movable handle, amovable jaw member carried by the stationary handle, means for operatingthe movable jaw through the me dium of the movable handle, an anvilpivotally mounted on the stationary handle and having setting facesarranged at different angles, each setting face having a setting pointassociated therewith, and a notch formed in the movable jaw to receiveany one of said setting points for retaining the anvil in a position topresent a selected setting face to the movable jaw.

7. A saw set comprising a stationary handle and a movable handle, amovable jaw member carried by the stationary handle, means for operatingthe movable jaw through the medium of the movable handle, an anvilpivotally mounted on the stationary handle and having setting facesarranged at diiferent angles, each setting face having a setting pointassociated therewith, and a notch formed in the movable jaw to receiveany one of said setting points for retaining the anvil in a position topresent a selected setting face to the movable jaw, the notch in saidmovable jaw also functioning to receive the point of the saw teeth beingset.

8. A saw set comprising movable and stationary jaws, two handle members,one of which is pivotally mounted on block projecting from and fixed tothe other handle member, said block also supporting the stationary jaw,and a connection between said pivoted handle member and the movable jawforcing said jaws one toward the other, said connection including twooppositely curved cam surfaces engaging each other.

9. A saw set comprising a stationary handle member, a movable handlemember pivoted thereto, movable and stationary jaw members carried bythe stationary handle member, the

movable jaw member having a force receiving portion in line with thepivotal axisfor the movable handle member, and means pivoted to themovable handle member and engaging said force receiving portion to bemoved from a position with its pivot laterally of toward a position withits pivot'between the movable handle pivotand said force 3 receivingportion.

10. A saw set comprising a stationaryhandlemember, a movable handlemember pivoted thereto, movable and-stationary jaw members carried bythe stationary handle member, the movable jaw member having'a forcereceiving portion in line withthe pivotal axis for the movable handlemember, and an element pivoted to the movable handle member and rockablyengaging said force receivand said force receiving portion.

11. A saw set comprising a'pair of-handle members, oneof said handlemembers havlng" a substantially right angularly arranged body extendingtherefrom,movable and fixed set-' pivot ting jaw members supported bythe body beyond its free end, the fixed jaw taking the form of'an anvil,the movable jaw member havingan operating jaw projecting laterally fromapproximately the inner end of the body, the second handle member beingpivotally supported laterally of the body between the setting andoperating jaws of the movable jaw member, and a connection between thepivoted handle member and the said operating jaw, said connectionincluding a rocker movable between stops on the handle member. 12. A sawset comprising a pair of handle members, one of said handle membershaving a substantially right angularly arranged body extendingtherefrom, slidable and fixed'jaw members, the fixed jaw member beingsup-- ported beyond the free end of the body, the slidable jaw memberincluding a shank slidable in the body and having a setting jaw locatedoutside of the fixed jaw and an operating jaw projecting laterallyapproximately at the inner end of the body, the'second handle memberbeing pivotally supported laterally of the body between the setting andoperating jaws of the movable jaw member, and a connection between thepivoted handle member and the said operating jaw.

13. A saw set comprising a pair of handles members, one of said handlemembers having asubstantially right angularly arranged body extendingtherefrom,movable and fixed setting jaw members supported by the bodybeyond its free end, the movable jaw member having an operating jawprojecting laterally from approximately the inner end of the body, theoperating jaw having an outwardly curved cam facing its setting jaw, thesecond handle member being pivotally supported laterally of the bodybetween the setting and operating jaws of the movable jaw member,

and a connection between the pivoted handle member and the saidoperating jaw, said connection including a substantially triangularly'shaped rocker having an outwardly curved :cam'surface rockably engagingthe cam operating jaw.

14. A saw set oomprlsing a pair of handle members, one of said handlemembers having asubstantially right angularly arranged body extendingtherefrom, movable and fixed set- 7 ating jaw toward the rocker.

ting jaw members supported by the'body beyond its free'end, the movablejaw member having an operating aw projecting laterally fromvapproximately the inner end of the body, the operatingojaw having anoutwardly curved cam facing its setting jaw,]the second I handle memberbeing pivotally supported lat- 'e'rally of the body between the settingand operating jaws of the movable j aw member, a connection between theplvoted handle member and the said operating jaw, said connec tlonlncludlng a substantially tlrangularly shaped rocker having an outwardlycurved cam surface rockably engagmg the cam operatlng aw, and means forforcing the oper- CHARLES A. JOHNSON.

